Screw-gearing.



No. 658,ll6. Patented Sept. l8, I900.

0. A. PACKER.

SCREW GEARING.

(Application filed Tan 26, 1900.) 1

(No Model.)

Tm I 2; In, DHMNWTW {711 UNITED STATEs PATENT OFFICE OREN A. PACKER, O FSOUR LAKE, TEXAS, ASSIGNOR OF ONE-HALF TO G. ENLOE, OF SAME PLACE.

SCREW-GEARING.

SPECIFICATION forming part of Letters Patent No. 658,1 16. datedSeptember 18, 1900.

application filed January 26, 1900. serial No. 2,909. (No model.)

To all whom it may concern.-

Be it known that I, OREN A. PAGKER, a citizen of the United States,residing at Sour Lake, in the county of Hardin and State of Texas, haveinvented a new and useful Screw- Gearing, of which the following is aspecification.

This invention relates to motors ingeneral,

angle thereto and at the same time to maintain a constant speed of thedriven shaft, a further object of the invention being to provide meansfor adjusting the position of the driven shaft to compensate for wear ofthe parts.

In the drawings forming a portion of this specification, and in whichsimilar numerals of reference designate like and corresponding parts inthe several views, Figure 1 is a Vertical section taken transversely ofr the main shaft of the motor at one side of the gearing that is driventherefrom and illustrating the form and position of the fan-shaft andthe means for rotating it. Fig. 2 is a section on line 2 2 of Fig. 1looking downwardly. Fig. 3 is a detail elevation showing a portion ofthe toothed wheel and illustrating the engaging positions of the teeththereof with the thread of the fan-shaft. Fig. 4 is a section on line 4at of Fig. 3.

Referring now to the drawings, the motor proper of the present inventionis supported by a frame comprising a base 5, to which are fixed uprights6 and 7 in the form of plates arranged parallel.

J ournaled in the plates 6 and 7 is a main shaft 8, with which areconnected the inner ends of two spiral springs 7? and 8 disposedconcentric therewith and having their outer ends attached to pins 10 and11.

Mounted loosely upon the shaft 8 and between theplates 6 and 7is a maindrive-gear 12, carrying a pawl 13, which isin operative relation to aratchet-wheel 14:, fixed upon the shaft. This "is the usual arrangementof parts toinsure rotation of the gear 12 when the springs 9 and 10 arewound upon the shaft 8 by means ofa key 15.

A train of gearing is connected with the gear 12 and may include anynumber of shafts provided with intermeshing wheels of various sizes tosecure the proper speed of rotation of a final shaft 16, upon which isfixed a wheel 17, having angular teeth 18.

The front faces of these teeth lie substantially radially of the wheel,while the rear faces approach the respective tangents from the apices ofthe teeth.

In the path of rotation of the teeth 18 is a driven shaft 19, the lower'end of which is journaled in a projection 20 of the plate 6, while theupper portion is adapted to turn in abearing at the outer end of a plate21, which is secured to the plate 6 through the medium of a bolt 22,passed through a slot 23, formed longitudinally thereof, this mountingof the plate 21 permitting its adjustment to move the shaft 19 towardand away from the teeth 18. The shaft 19 has a worm upon its lowerportion between the plate 21 and the bearing 20, the upper face of whichslants downwardly in planes taken longitudinally and radially of theshaft, as illustrated most clearly in Fig. 3 of the drawings. This shaftis so disposed that the teeth 18 do not rotate in the same plane with aradius of the shaft; but instead they are positioned to engage the upperface of the worm entirely at one side of the shaft,

so that the teeth tend to pass beyond the shaft. Furthermore, the endsof the teeth are beveled on their sides adjacent the shaft,

so as to fit closely to the curve of the worm, as shown in Fig. 4, andthus the teeth may engage the Worm at their points, and by forming theteeth of suitable length the points of the teeth may travel in adirection transversely of the shaft to an extent sufficient to maintainengagement of the teeth with the worm at all times and in such positionas to secure the most eifective result.

Upon the upper end of the shaft 19 is fixed a head having radial arms25, which are hollow and in which are disposed the ends of fan-blades26, which latter are arranged in what is known as a feathering position,so as to direct a current of air either toward or away from the motor,depending upon the direction of rotation and the direction of slant.

While in the present structure the shaft 19 is shown as driven from thesprings 7 and 8", which form the source of energy, it will of course beunderstood that the shaft 16, which carries the wheel 17, may be drivenin any manner and from any suitable source. Furthermore, it will beunderstood that any system of gearing may be employed between the shaft16 and its source of energy and that any suitable materials andproportions may be used without departing from the spirit of theinvention.

What is claimed is- 1. The combination with a shaft provided with aworm, of a wheel provided with radially-extending teeth and adapted torotate in a plane at one side of the shaft and operatively engage theworm to rotate the shaft, and means for adjusting the worm bodily in aplane parallel to the ratchet-wheel to compensate for wear of theextremities of the ratchet-teeth.

2. The combination with a shaft provided with a worm, of a wheeldisposed adjacent to the shaft and having radially-extending teethdisposed for rotation in a plane at one side of the shaft to engage theextremities of the teeth with the face of the Worm, the extremities ofthe teeth being beveled on their sides adjacent to the shaft, and meansfor adjusting the worm bodily in a plane parallel to the ratchet-wheelto compensate for wear of the extremities of the ratchet-teeth.

In testimony that I claim the foregoing as my own I have hereto aifixedmy signature in the presence of two witnesses.

OREN A. PAOKER.

Witnesses:

J. N. VOTARD, F. H. VoTARD.

